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Finding the Fourth Proportional to 108,459.92, 162,739.36 and 64,173.44

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Solution

The fourth proportional to 108,459.92, 162,739.36 and 64,173.44 is: 96,289.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,459.92 : 162,739.36 = 64,173.44 : x
  2. Step 2: Convert to fraction form
    108,459.92/162,739.36 = 64,173.44/x
  3. Step 3: Cross multiply
    108,459.92x = 162,739.36 × 64,173.44
  4. Step 4: Simplify right side
    108,459.92x = 10,443,544,554.60
  5. Step 5: Solve for x
    x = 10,443,544,554.60/108,459.92
  6. Step 6: Final answer
    x = 96,289.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.